Results 61 to 70 of about 215 (160)

Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics

Energies
In power systems, various power quality disturbances are present, including voltage deviation, voltage unbalance, and voltage waveform distortions. Voltage waveform distortions are usually identified with harmonics, but in some systems, subharmonics ...
Piotr Gnaciński, Marcin Pepliński, Adam Muc, Damian Hallmann   +3 more
doaj   +1 more source

LADRC‐based non‐characteristic harmonic suppression strategy for pumped storage power plants

Electronics Letters, Volume 60, Issue 20, October 2024.
This letter proposes a control strategy based on linear active disturbance rejection control (LADRC) to alleviate the delay triggering angle α non‐characteristic harmonics caused by transient disturbances. The validity of the conclusion was verified through on‐site data collection, theoretical analysis, and simulation verification.
Zheng Lan, Xi Peng, Jie Liu, Fei Jiang, Zhonglong Li   +4 more
wiley   +1 more source

Effect of Voltage Fluctuations on Induction Motor Currents

Scientific Journal of Gdynia Maritime University
One of the types of power quality disturbances met in a power system is voltage fluctuations. Cyclic voltage fluctuations are interconnected with the presence of subharmonics and interharmonics – that is components of frequency less than the fundamental
Marcin Pepliński, Piotr Gnaciński
doaj   +1 more source

Speed Variation of a Cage Induction Motor under Square Voltage Modulation

Scientific Journal of Gdynia Maritime University
Cyclic voltage fluctuations can be considered as a superposition of the fundamental voltage component, subharmonic and interharmonic components – that is the components of frequency less than the fundamental one or not being its integer multiple.
Piotr Gnaciński, Damian Hallmann
doaj   +1 more source

Estimation of Wideband Multi-Component Phasors Considering Signal Damping. [PDF]

Sensors (Basel), 2023
Zhao D, Li S, Wang F, Zhao W, Huang S.
europepmc   +1 more source

Harmonic and interharmonic detection based on adaptive wavelet and improved EWT

Zhejiang dianli
To address the issues of noise sensitivity and over-decomposition when decomposing harmonic signals using empirical wavelet transform （EWT）， a method based on adaptive wavelet denoising and improved EWT is proposed for detecting harmonics and ...
KONG Chuirui, CHEN Fengxian, YANG Lingrui, CHE Yukui, YANG Haixian, XIA Wei, GUO Cheng   +6 more
doaj   +1 more source

How Instrument Transformers Influence Power Quality Measurements: A Proposal of Accuracy Verification Tests. [PDF]

Sensors (Basel), 2022
Crotti G, Chen Y, Çayci H, D'Avanzo G, Landi C, Letizia PS, Luiso M, Mohns E, Muñoz F, Styblikova R, van den Brom H.   +10 more
europepmc   +1 more source

Dense-Frequency Signal-Detection Based on the Primal-Dual Splitting Method. [PDF]

Entropy (Basel), 2022
Zheng J, Liao Z, Ma X, Jin Y, Ma H.
europepmc   +1 more source

Comparison of Synchronization Techniques Under Distorted Grid Conditions

IEEE Access, 2019
In grid-connected power converter applications, the phase-locked loop (PLL) is probably the most widely used grid synchronization technique, owing to its simple implementation. However, in power grids some very common problems, such as voltage distortion,
Ikram Ullah, Muhammad Ashraf
doaj   +1 more source

Grid Frequency Measurement through a PLHR Analysis Obtained from an ELF Magnetometer. [PDF]

Sensors (Basel), 2022
Portillo F, Alcayde A, García RM, Novas N, Gázquez JA, Férnadez-Ros M.   +5 more
europepmc   +1 more source